Speaker
Prof.
C.-J. David Lin
(National Chiao-Tung University, Taiwan)
Description
We present our study of the running coupling constant in SU(3) gauge theory with 12 flavours of fermions. In this work we use the method of the step scaling, implemented on lattices with twisted boundary condition. The lattice volumes in this work are 6, 8, 10, 12, 16, 20, and 24. This choice of volumes enables us to investigate the systematic effects in the continuum extrapolation. We discuss in detail the approach of using the Wilson Flow for extracting the coupling constant via the computation of the energy density. In particular, we present results obtained with two different lattice discretisations (clover and the plaquette) of the energy density. Our results shed light on the recent controversy over the infrared behaviour of this gauge theory. Finally, we also briefly comment on the coupling constant computed using the Twisted Polyakov Loop scheme.
Primary author
Prof.
C.-J. David Lin
(National Chiao-Tung University, Taiwan)
Co-authors
Dr
Alberto Ramos
(DESY Zeuthen)
Dr
Eigo Shintani
(Mainz University)
Dr
Hiroshi Ohki
(Kobayashi-Maskawa Institute for the Origin of particles and the universe)
Dr
Kenji Ogawa
(National Chiao-Tung University, Taiwan (till November 2013))
